<script setup lang='ts'>
    import { provide,ref } from 'vue';
    import Father from './16_跨代传值的爸爸组件.vue'
    const salary = ref(10000)
    // 谁提供数据 谁负责修改
    provide("money",salary) //提供给后代使用
    provide("cost",(costMoney:number)=>{
        salary.value -= costMoney
    })

</script>
    
<template>
       <h1>我是爷爷</h1>   
    <p>爷爷的退休金：{{salary}}</p>
    <Father></Father>
</template>
       
<style scoped>
       
</style>